File:191024-cpa-charter-sm.jpg|thumb|right|220px|Charter for a local unit of the Communist Party of America dated October 24, 1919.
The '''Communist Party USA''' ('''CPUSA''') is a communist
political party in the United States
Established in 1919 after a split in the Socialist Party of America
, it has a long, complex history that is closely tied with the Communists in the U.S. Labor Movement (1919–1937)|U.S. labor movement
and the histories of communist parties worldwide.